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基于EKF的異步電機(jī)直接轉(zhuǎn)矩控制系統(tǒng)

為了提高直接轉(zhuǎn)矩控制（DTC）系統(tǒng)定子磁鏈估計(jì)精度，降低電流、電壓測(cè)量的隨機(jī)誤差，提出了一種基于擴(kuò)展卡爾曼濾波（EKF）實(shí)現(xiàn)異步電機(jī)轉(zhuǎn)子位置和速度估計(jì)的方法。擴(kuò)展卡爾曼濾波器是建立在基于旋轉(zhuǎn)坐標(biāo)系下由定子電流、電壓、轉(zhuǎn)子轉(zhuǎn)速和其它電機(jī)參量所構(gòu)成的電機(jī)模型上，將定子電流、定子磁鏈、轉(zhuǎn)速和轉(zhuǎn)子角位置作為狀態(tài)變量，定子電壓為輸入變量，定子電流為輸出變量，通過(guò)對(duì)磁鏈和轉(zhuǎn)速的閉環(huán)控制提高定子磁鏈的估計(jì)精度，實(shí)現(xiàn)了異步電機(jī)的無(wú)速度傳感器直接轉(zhuǎn)矩控制策略，仿真結(jié)果驗(yàn)證了該方法的可行性,提高了直接轉(zhuǎn)矩的控制性能。 Abstract:  In order to improve the Direct Torque Control（DTC） system of stator flux estimation accuracy and reduce the current， voltage measurement of random error， a novel method to estimate the speed and rotor position of asynchronous motor based on extended Kalman filter was introduced. EKF was based on d-p axis motor and other motor parameters （state vector: stator current， stator flux linkage， rotor angular speed and position； input: stator voltage； output: staror current). EKF was designed for stator flux and rotor speed estimation in close-loop control. It can improve the estimated accuracy of stator flux. It is possible to estimate the speed and rotor position and implement asynchronous motor drives without position and speed sensors. The simulation results show it is efficient and improves the control performance.

標(biāo)簽： EKF 異步電機(jī) 直接轉(zhuǎn)矩 控制系統(tǒng)

上傳時(shí)間： 2015-01-02

上傳用戶：qingdou

邏輯分析儀中timing state的應(yīng)用

標(biāo)簽： timing state 邏輯分析儀

上傳時(shí)間： 2013-11-01

上傳用戶：ouyang426

單片機(jī)12864液晶時(shí)鐘顯示程序

12864液晶時(shí)鐘顯示程序 LCD 地址變量 ;**************變量的定義***************** RS             BIT      P2.0            ;LCD數(shù)據(jù)/命令選擇端(H/L) RW             BIT      P2.1          ;LCD讀/寫(xiě)選擇端(H/L) EP             BIT      P2.2            ;LCD使能控制 PSB        EQU P2.3 RST        EQU P2.5 PRE            BIT      P1.4            ;調(diào)整鍵(K1) ADJ            BIT      P1.5            ;調(diào)整鍵(K2) COMDAT         EQU P0 LED        EQU P0.3 YEAR           DATA      18H            ;年,月,日變量 MONTH          DATA      19H DATE           DATA      1AH WEEK           DATA      1BH HOUR           DATA      1CH            ;時(shí),分,秒,百分之一秒變量 MIN            DATA      1DH SEC            DATA      1EH SEC100         DATA      1FH STATE          DATA      23H LEAP           BIT      STATE.1            ;是否閏年標(biāo)志1--閏年，0--平年 KEY_S          DATA      24H            ;當(dāng)前掃描鍵值 KEY_V          DATA      25H            ;上次掃描鍵值 DIS_BUF_U0      DATA      26H            ;LCD第一排顯示緩沖區(qū) DIS_BUF_U1      DATA      27H DIS_BUF_U2      DATA      28H DIS_BUF_U3      DATA      29H DIS_BUF_U4      DATA      2AH DIS_BUF_U5      DATA      2BH DIS_BUF_U6      DATA      2CH DIS_BUF_U7      DATA      2DH DIS_BUF_U8      DATA      2EH DIS_BUF_U9      DATA      2FH DIS_BUF_U10     DATA      30H DIS_BUF_U11     DATA      31H DIS_BUF_U12     DATA      32H DIS_BUF_U13     DATA      33H DIS_BUF_U14     DATA      34H DIS_BUF_U15     DATA      35H DIS_BUF_L0      DATA      36H            ;LCD第三排顯示緩沖區(qū) DIS_BUF_L1      DATA      37H DIS_BUF_L2      DATA      38H DIS_BUF_L3      DATA      39H DIS_BUF_L4      DATA      3AH DIS_BUF_L5      DATA      3BH DIS_BUF_L6      DATA      3CH DIS_BUF_L7      DATA      3DH DIS_BUF_L8      DATA      3EH DIS_BUF_L9      DATA      3FH DIS_BUF_L10     DATA      40H DIS_BUF_L11     DATA      41H DIS_BUF_L12     DATA      42H DIS_BUF_L13     DATA      43H DIS_BUF_L14     DATA      44H DIS_BUF_L15     DATA      45H FLAG            DATA      46H ;1-年，2-月，3-日，4-時(shí)，5-分，6-秒，7-退出調(diào)整。 DIS_H           DATA      47H DIS_M           DATA      48H DIS_S           DATA      49H

標(biāo)簽： 12864 單片機(jī) 液晶時(shí)鐘 顯示程序

上傳時(shí)間： 2013-12-25

上傳用戶：wvbxj

Foundation入門(mén)—仿真

Explain how to open the Waveform Viewer for Verification ? State how to insert nodes into the Waveform Viewer ? Tell how to assign Stimulus with the Stimulator Selector

標(biāo)簽： Foundation 仿真

上傳時(shí)間： 2013-10-29

上傳用戶：daguogai

該系統(tǒng)是本人課程設(shè)計(jì)作業(yè)

該系統(tǒng)是本人課程設(shè)計(jì)作業(yè)，因?yàn)闀r(shí)間關(guān)系，只用了兩天多的時(shí)間編成。所以有很多地方?jīng)]有得到增強(qiáng)。版本為1.0?，F(xiàn)作以下升級(jí)。 增加NEW，OPEN版本。 提高輸入容錯(cuò)。判斷輸入的對(duì)錯(cuò)。 時(shí)間關(guān)系，搜索功能為線性搜索，現(xiàn)增強(qiáng)如下：f_search:費(fèi)氏查找法；btree:二叉樹(shù)查找法；l_search：線性查找法； r_search：遞歸折半查找法；zcsear:雜湊碰撞查找法；o_sear:插補(bǔ)查找加強(qiáng)法； 排序是冒泡法，現(xiàn)增強(qiáng)為：heaps:累堆排序；binary：二叉樹(shù)排序；xieer：謝耳排序；sinsert：插入排序；quicks:快速排序；select:選擇排序法； 有時(shí)間不仿試試。

標(biāo)簽：

上傳時(shí)間： 2013-12-30

上傳用戶：釣鰲牧馬

提高輸入容錯(cuò)。判斷輸入的對(duì)錯(cuò)。 時(shí)間關(guān)系

提高輸入容錯(cuò)。判斷輸入的對(duì)錯(cuò)。 時(shí)間關(guān)系，搜索功能為線性搜索，現(xiàn)增強(qiáng)如下：f_search:費(fèi)氏查找法；btree:二叉樹(shù)查找法；l_search：線性查找法； r_search：遞歸折半查找法；zcsear:雜湊碰撞查找法；o_sear:插補(bǔ)查找加強(qiáng)法； 排序是冒泡法，現(xiàn)增強(qiáng)為：heaps:累堆排序；binary：二叉樹(shù)排序；xieer：謝耳排序；sinsert：插入排序；quicks:快速排序；select:選擇排序法；

標(biāo)簽： 輸入 容錯(cuò)

上傳時(shí)間： 2015-02-21

上傳用戶：wang0123456789

介紹幾種cpuThe 8xC251SA/SB/SP/SQ improves on the MCS-51 architecture and peripheral features, introducin

介紹幾種cpuThe 8xC251SA/SB/SP/SQ improves on the MCS-51 architecture and peripheral features, introducing the advanced register based CPU architecture i.e., the MCS 251 microcontroller architecture. The register based CPU supports a 40-byte register file. In addition, the 8xC251SA/SB/SP/SQ microcontroller has 256-Kbyte expanded external code/data memory space and 64-Kbyte stack space. The new controller is also specially designed to execute C code efficiently. More importantly, the 8xC251SA/SB/SP/SQ maintains binary code compatibility with MCS 51 microcontrollers but at the same time allows the use of the powerful MCS 251 microcontroller instruction set, with many new 8, 16 and 32 bit instructions available. The 8xC251SA/SB/SP/SQ has 512 bytes or 1 Kbyte of on-chip data RAM options and is available in 16 Kbytes and 8 Kbytes of on-chip ROM/OTPROM or ROMless options.

標(biāo)簽： architecture introducin peripheral improves

上傳時(shí)間： 2015-03-15

上傳用戶：ccclll

WHAT MIME64 IS: MIME64 is an encoding described in RFC1341 as MIME base64.Its purpose is to encode b

WHAT MIME64 IS: MIME64 is an encoding described in RFC1341 as MIME base64.Its purpose is to encode binary files into ASCII so that they may be passedthrough e-mail gates. In this regard, MIME64 is similar to UUENCODE.Although most binaries these days are transmitted using UUENCODE, Ihave seen a few using MIME64, and I have had requests from friends thatI decode MIME64 files that have fallen into their hands. As long assome MIME64 continues to exist, a package such as this one is usefulto have.

標(biāo)簽： MIME described 64 encoding

上傳時(shí)間： 2013-12-17

上傳用戶：maizezhen

This scheme is initiated by Ziv and Lempel [1]. A slightly modified version is described by Storer a

This scheme is initiated by Ziv and Lempel [1]. A slightly modified version is described by Storer and Szymanski [2]. An implementation using a binary tree is proposed by Bell [3]. The algorithm is quite simple: Keep a ring buffer, which initially contains "space" characters only. Read several letters from the file to the buffer. Then search the buffer for the longest string that matches the letters just read, and send its length and position in the buffer.

標(biāo)簽： initiated described modified slightly

上傳時(shí)間： 2014-01-09

上傳用戶：sk5201314

The Kannel Open Source WAP and SMS gateway works as both an SMS gateway, for implementing keyword b

The Kannel Open Source WAP and SMS gateway works as both an SMS gateway, for implementing keyword based services via GSM text messages, and a WAP gateway, via UDP. The SMS part is fairly mature, the WAP part is early in its development. In this release, the GET request for WML pages and WMLScript files via HTTP works, including compilation for WML and WMLScript to binary forms. Only the data call bearer (UDP) is supported, not SMS.

標(biāo)簽： gateway implementing SMS keyword

上傳時(shí)間： 2014-01-11

上傳用戶：2525775